Saxton Hale: Play 3 bosses (I think... maybe 2... idk, never played there), gets boring quite quickly, everybody pretty much forgot about it.
Freak Fortress: Play 30+ bosses, half of which nobody knows about. Boss ideas keep coming.
SSB4 3DS: Everything you expected Smash Bros to be, though a little lighter and smaller than usual. I can see it gaining MAYBE 4 more characters through DLC.
SSB4 Wii U (doesn't actually own it, yet): Everything you wanted and more, quite overwhelming at times. Much bigger potential to keep getting bigger.