Board Thread:Game Discussion/@comment-5211035-20130628130050/@comment-192.75.101.162-20130628131252

The answer is, "It depends." The "Recommend" feature favors higher attack scores above all, and I think your Deck Power rating does too. I am noticing now that I have a number of R4 weapons, "Recommend" is starting to pair R4 weapons with R3 characters to boost their attack, even if it costs said characters in HP and defense. For example, it paired my R3 Grimlock with R4 Hook's weapon. Results (atk/HP/def):

With R4 Hook = 43.5K / 40.7K / 3.9K; with signature = 40.3K / 41.7K / 5.4K

I'm not sure which of those is actually a stronger character in battle.