Up to this point I can't say.
For one, WKC mixes two of the most recent innovations that i've loved in PS2 RPG's, the FFXII combat system and the Georama system of Dark Cloud. Plus it has giant robot fights xD
For the other, the things that i've seen from FFXIII, has lead me to believe that all this complaining is just people who were either expecting a new FFVII or FFVI, or just read the reviews and stopped caring about the game.
Seriously, the game is just so good, anyone who has watched a live-stream or most of the gamers who have imported FFXIII in this site have already atested to the quality of the game, i'll take those two thigs in consideration, over random reviews and forum goes who just want to diss the game ;)
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"