[quote name='whoknows']Online is the main reason I'm leaning towards DW7, even though it's 3x as much.
And have there been reviews for it yet?[/QUOTE]
On one hand, DW7 is pretty likely to drop in price at a good clip, but since you're interested in the co-op element, who knows how long there will be a steady stream of people to play with online for a game with a limited fanbase? It's a gamble.
You'll have a hard time finding an unbiased review for any Warriors game, as they're often given to reviewers with an explicit loathing for the games and are generally written as snarky entertainment pieces for other people who already hate the franchise. They're of little help to those with a genuine interest in trying the series and deciding on their own whether or not it's for them. The best you'll probably do on a major review site is Destructoid's Jim Sterling, who, while usually a shameless shock reviewer who creates controversy to rack up hits, is generally Warriors-friendly. Player impressions on the koeiwarriors.co.uk forums might also be helpful.