If you really didn't like TSW, SWTOR, or GW2, then I doubt you'll like WildStar, those were all quite excellent games. Really depends on what you want from a game, and WildStar is very much like WoW, but with some nice changes, but also some glaring failures (at the moment).
Its combat is rather fun, but not as good as other "action" based combat like Tera / Blade & Soul. If you didn't like combat in GW2, I doubt you'll like it in WildStar. Combat in WildStar is all about pressing your builder skill repeatedly while watching for, and avoiding colored designs on the ground. ;p
Leveling up is your typical quest hub to quest hub method, just like WoW, and less fun than GW2. Though it does allow you to turn in/receive many quests without visiting/going back to a NPC, which is great. You can level up via PvP (bg's / arena's) if that is your thing too
You should preface your opinion with "I am a big GW2 fan and take my opinion with a grain of salt". There is no objective data that you could toss out to confirm your wild belief that GW2 had a good leveling system or a superior action combat system. In fact that goes against the grain quite heavily.
You are also underinformed about Wildstar. Attempting to characterize leveling up as 'wow like quest hubs, oh u can pvp I guess" shows either a lack of research or intentional downplay. In addition to traditional quest hubs interwoven with path content you have both dungeons and adventures. Dungeons are somewhat traditional with significantly harder tuning and of course a balance between trinity for team dynamics and a higher burden on individual players with more position requirements/harder interrupt mechanics.
Wildstar also has adventures which are branching scenarios similar to dungeons in concept but with more of am emphasis on recreating epic quest scenarios with group decision making. The combination of adventures, dungeons, overworld questing/paths/rare monsters and pvp is just a more fluid leveling experience than both GW2 and TSW.
Combine these detailed content plans, a game that was designed top down (Endgame already exists...GW2? Where was your endgame), and a combat system that hybridizes traditional hotkey mmo teamplay with more mobile/action elements and very lol-like skillshots meshes so well together.
I see nothing but emotion in your statement. Factually you could say "The Secret World has a more intricate story, compelling puzzles, deep characters, and the best mmo environments ever made", you could say "GW2 is a fun couple week leveling experience and has a lot of dynamic content for alt lovers" or "Swtor took a formulaic model and added a fun, engaging if a bit repetitive story structure while having all the bells and whistles that make it a solid, playable longterm game".
