Sengoku 3 is one of my favorite Brawlers, the first 2 don't feel like brawlers more like quick kills like sunset riders mystic warriors and shit. I like all of them but 3 is great, plus if you are a brawler man you know 3 is right up to par with Gaia Crusaders, KOV, Gladiator and all the good later era brawlers. A lot of folk don't like brawlers 'cause they credit feed through them.
On another topic but somewhat relevant, I still hold X-Men as my faorite brawler of all time followed closely by Sengoku 3 and D&D SOM, my problem with Sengoku 3 and Gaia Crusaders is that after the second or 3 rd stage all the enemies are dwarfs, but I guess it only adds difficulty to combos and juggling which is fine to hone the skills anyway.
Edit: Can't forget about Captain Commando, Battle Circuit and The Punisher. Those are awsome! I also feel like the Slammer series and AODK are kind of a fighting game with a Brawler feel to it, I love that shit!