Before buying this game, I saw other people had called it an arcade game. I was hesitant, but it's a baseball game, what could it really mean that would tarnish my gaming experience?
Now that I've had it for a couple of weeks and played it quite a bit, arcade has come to mean for me that:
1. The game is less realistic than usual. (E.G. points you earn for throwing strikes, taking balls, getting hits or making diving catches).
2. There really isn't a "Season" or "Franchise" mode. There is the Rookie Challenge, where you create your own player and bring him up through the big leagues and build his stats to have him become the MVP and what not.
The game is extremely addicting and fun. And the games are fast-paced a-la Ken Griffey Baseball for the Nintendo 64 (yes I'm comparing that far back, because it's hard to find good sports games).
Easy mode is fun for people who like the Overkill games (like me), winning by anywhere from 5 to 50 points, where Super Hard mode is incredibly challenging.
There are, however, things in the game I'd like to see fixed in the next incarnation of this series. One incredible frustration for me is the wall catches. And by that I mean that it is NOT hard to hit a ball hard enough for it to be a home run. But depending on how good a fielder the outfielder is (out of five stars), you're likely going to be robbed of a home run. Honestly, if the outfielder is at three stars or above, you can almost ALWAYS kiss your home run goodbye. They're going to catch it. But this is not inherently frustrating. What IS is that they get 25000 Power Points for making each catch. Once you reach 100,000 you have the option to either active Big Heat mode when pitching (makes every pitch extremely difficult to hit) or Power Blast mode when you're hitting (if you touch the ball it's a home run). So you can see how quickly they can amass enough points to use these.
The other frustration is in a similar vein. Almost always, the computer AI will intentionally measure their stride when running after a fly ball so that they can make a diving catch (and get power points, "Only" 17,500 of them for those). Again, they make the catch, what's the big deal. It's just very frustrating when you don't want them to build up their points so fast. If they get legitimate his or if they really DO have to dive to make a catch I'm totally fine with that. But when you hit a hard line drive and they job to make the catch (Or even worse, when you hit an infield line drive and they dive for it instead of just having the fielder move two feet to their left or right) it really gets to you.
Overall, though, these are manageable problems, and the game is worth playing.