It's also one of the few games that punishes you for grinding and/or fighting every battle you see
Specifically, you essentially have two different levels: your battle rank (traditional level, basically), and your actual stats. The more battles you fight, the higher your battle rank gets, but the worse your stat gains become. And battle rank levels up quicker than stats do. So essentially you'd end up fighting high ranking monsters with low stats, hindering your ability to win battles later on.
To avoid this, you have to avoid as many enemy encounters as possible, and do your stat grinding with Rush alone against super weak enemies. Do that for a while and your stats will have gotten to the point where you don't need to worry about the battle rank discrepancy anymore.
The PC version is indeed superior to the 360 version (though since my laptop can barely run the likes of the Strong Bad games, I had to use the latter), but installing the game to the 360 hard drive fixes most of the technical issues. The soundtrack is awesome, and your primary party members are all experienced military veterans instead of rookie teenagers. For a list of differences between the two versions, look here:
http://lastremnant.wikia.com/wiki/Difference_between_Xbox360_and_PC_version
One last thing: if you want to get the most out of TLR, you MUST use a guide.
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A runabout! I'll steal it! NO ONE WILL EVER KNOW!