Hmm, lets compare
-Level of polish: Warriors Rage 2 loses by character model polygon count; Sen loses by monotonous gameplay. I mean, theres alot of comments where Sen’s gameplay is compared to Toshinden games, so my guess is both games are somewhat even by level of polish.
-Graphics: Sen wins, no discussion
-SS style: Both games have it.
-Violence: Both games have red blood, yet only Sen has dismemberments, albeit same to all chars, so Sen wins there
-Number of classic characters: Sen wins…well its not like they play like classic character there, but at least they look like ones.
-Concepts of new characters: Warriors Rage 2 new character concepts are great and somewhat original, in Sen they are more generic, like a generic type of warrior from every country; a cowboy, a viking, a spearman, an armored knight, etc. Sen new character weapons are generic too; so WR 2 wins.
-Movelists: Warriors Rage 2 has diverse movesets, with around 10 special moves and with 2 supers per character. Character playstyles are very diverse in WR2; Sen has basically nothing, few specials and no supers, and Sen has no fireballs. All Sen characters play in same fashion, aka set up a juggle. Both games have alt stances it seems. Overall, WR2 wins.
-Storyline: Warriors Rage 2 has one of most in-depth storylines in SS games, with story paths events happening altogether (like each walkthrough shows you part of whats happening, and you can see the grand scheme of events combined at japanese website), alot of dialogs and backstories, Storyline FMV movies. WR2 story is also the part of game’s canon. Sen story is uncanon, somewhat simple (princess runs away, everyone pursues her to catch her, and her evil uncle/final boss wants to get her sword), has almost no dialogs, and even text-based endings like in SS3 without pictures. WR2 endings had 6-8 pictures in them for each character. WR2 wins
-Gameplay: WR2 has somewhat complex gameplay which is based on several types of stuns/staggers, hit types changing on counterattack, four different types of Weapon Deflect, jumps of variable height, air recovery, okizeme, etc. It also supports weapon flipping, sword clash competition and other classic elements involving weapons. Gameplay is strictly 2D. Sen has canned combo strings and juggle combos, mainly. Sen’s gameplay is like in 3D fightings, and Sen also has no weapon flipping; so by features, WR2 gameplay wins
-Online support: Both games have it, Sen via XBOX Live, WR2 via Kaillera.
-Unlockables: In WR2 you can unlock 12 chars, mission mode, extra options for vs mode, pictures in picture gallery, FMV movies in movie gallery, etc. In Sen you can unlock Draco and Golba.
-Secrets (in classic SS game fashion like Galford summoning 3 puppies on perfect win etc): WR2 has intro pose select, win pose select, 2 hidden costumes for Minto, and Mugenji’s butterfly summon feature. To my knowledge, Sen has nothing.
-Additional stuff released: WR2 has a soundtrack, CD drama, official manga, alot of artworks, sketches, and plastic figurines of several characters released. Sen has only soundtrack and Suzuhime half-naked figures, and you also can buy plastic replica of her sword. So far WR2 wins.
So WR2 gets 7 points and Sen gets 3