Game is good, really good. It wont replace wow for the hardcore players simply because wow instances + raids are better but GW 2 has way superior (it actually obliterates wow on this section) leveling atm and its pvp - while lacking compared to wow's fluidity - is way superior when it comes to environment + large scale battles + objectives.
You can play the 2 games side by side imo GW 2 is an excellent game and for 60 euros and the time it will offer you while being subscription free is a bargain. if it had proper instanced pve + raiding it would wipe the floor with wow atm but lacks on this department but only on this one
Forums are very positive btw if you think that's negativity you haven't seen diablo/aion/swtor launches etc :P And rightfully so we are talking about an extremely good game here. Try it i guarantee you will love it.
Its not a wow replacement if you are a raider. Do not approach it as one