The writing style is intriguing, even compelling, as is the subject matter, at first: handled with such skill that the reader hardly notices how much "telling" instead of "showing" is going on, with the introduction of the sizeable cast. From the first few chapters, we know that the two sets of characters are fated to meet, and we can't wait for it to happen...
...however, along the way, things get weird. Couples come together without effort, and the author feels no need to show us the intricacies of how this happens. Yes, I GET that it's not a romance novel, but still, it wouldn't kill him to have given us a little more than a single paragraph where we're told that they travel together and then have sex on a table and suddenly they're a couple, or a waitress sees an athlete and informs them they're going on a date and suddenly they're a couple.
Henry's adventures in the world of pro ball are, ultimately, pointless because nothing ever really comes of his being swindled on his contract, there's no focal point or conflict there because Henry himself is as impassive as a cigar-store Indian. If the point of his travails on the baseball team were to meet the fellow player that ended up living in the trailer park with the rest of them, this plotline could have been written FAR more tightly, precisely, and purposefully. As it is, Henry's entire plotline meanders until the reader is bewildered about what in the hell the point was to it all.
That leads me to Henry himself. I'm convinced that he is either a high-functioning autistic, or has Asperger's syndrome. I'm also confused as to how he keeps mentioning how he doesn't know where he came from, or what he was doing before being discovered for baseball, when it becomes perfectly clear that he DOES indeed know. Is he lying? Missing parts of his memory? Going insane? Am *I* going insane? It's so confusing.
His relationship with his new girlfriend is seamless perfection, with them concurring in every possible way, no matter what happens: living in a house with no furniture? Sure! Pregnant? Yay! Deserting his baseball career to head out to live in a trailer in the desert after reading a letter from an elderly German man? Why not! There's never any conflict or even a moment's dissent between them, thus creating a very unrealistic, unsatisfying relationship that cloys.
The same goes for Benny and Becky. I personally have trouble warming up to a woman who's so irresponsible with her birth control that she has three unplanned pregnancies in as many years. I also find her and Benny's delight in her last pregnancy puzzling and unrealistic, but that could be because their relationship is so poorly composed and exposed to us: they, too, have an idyllic dynamic with nary a disagreement or hiccup in how attuned their priorities are to each other. Again, the lack of conflict produces an unnatural, shallow pairing. A far better-developed, infinitely more touching depiction of love is that of the Schmidtbauers, and even Al's newfound love with the widowed proprietor of the trailer park has more "meat" and genuine sentiment and depth than the other two.
Most poorly done of all is how the two plotlines, always precariously connected at best, finally come together. I suppose the point of it all was that appearances can be deceiving, especially when you hope for something to be true so hard you delude yourself (as in the case of Gunter's insistence that Henry is Arthur's reincarnation). But the red herrings that are suggested so strongly, and then later on dismissed so perfunctorily, just leave the reader confused and baffled.
PS. the most ridiculous, unlikely aspect is how Benny and Henry both expound on arcane mathematic and scientific issues and, instead of those around them being bored and loathing them as show-offs (which is how most Americans are with exposure to advanced educational issues), they are greeted with exclamations of delight. Hello, wake up and smell the anti-intellectualism. If this happened in the real world, no one would engage in mutually rapturous expressions of joy and try to wrap their own brains around the issues brought forth by the eggheads. And I say this AS an egghead who's received this selfsame reaction myself, many times.
Thus the author's tenuous grasp on characterization causes him to create a cast that do not feel genuine or authentic; instead, they feel like ethereal dream-people who lack passion, reason, or sanity. They float through the plot instead of impacting it or the reader, and thus they are quite unsatisfying, insubstantial, and disappointing.