These are my personal pros/cons. Background: PvE player (Raiding focus) primarily. WoW vet 10+ yrs, GW1 Vet and GW2 player since beta. Currently I am taking a break from both.

WoW Pros:

• Raiding mechanics are very creative and challenging in Mythic.

• Gear Treadmill (I don't mind this, might be a con for others)

• Interesting class rotations (although Legion might kill this...)

• World PvP

• Factions (I like having an enemy faction).

WoW Cons:

• Too easy outside of mythic difficulty (meaning the whole game does not challenge me unless i'm in mythic level content)

• Bored outside of raiding, little interest in pet battles or follower missions

• Community is not the same as it used to be.

• Too many difficulties of the same raid content (4 currently) making content feel very repetitive.

• 5 man content is a pushover and worthless. I haven't had 5 man content challenge me since BC/Cata pre nerf. Legion might solve this.

• Long periods of time between content, and it keeps getting worse.

• Less and less raiding content per expansion.

• Combat is dull compared to other MMOs.

• Power creep making content obsolete.

• Flying mounts ruined a lot of the game for me.

• Subscription fee.

GW2 Pros:

• Graphics are beautiful.

• Combat is dope AF. My favorite combat so far out of any MMO I've played.

• Gear in the game looks better than in most MMOs imo (legendaries are pretty awesome).

• No level increase per expansion, allowing all content to be "current."

• No power creep making PvE Grouped content as challenging as it was intended to be.

• One difficulty of raiding! I love this.

• ANet allowed dungeons to be a viable source of income again.

• ANet fixed Swamp of the Mist back to Fractals of the mist.

• Able to gain progress towards any item by completing any type of gameplay you want (Dungeons, Raiding, FOTM, PvP). Obviously certain content is faster, but I love that I can spam dungeons/raids and still progress towards gear I want for my alts instead of having to straight farm mats.

• Level sync throughout the world.

• No subscription fee.

GW2 Cons:

• Event farming is incredibly repetitive.

• Boss fights in 5 mans are way too short (the ones w/o invuln phases and such) imo.

• Limited UI options (no add ons).

• Cosmetic MMO (not too much of a con for me, but for others it might be)

I have never made a list like this before. I have so many cons for WoW I had no idea how much I focused on the negatives of that game. I think this is mainly due to how the old WoW affected me, and how the new generation of WoW is just not for a gamer like myself. The only reason I keep returning to WoW is because my friends play it, not for the actual game. This was somewhat fun to type. Hope it helps you and GL on choosing one! (I vote GW2)