Mesmer WvW Guild Race
In sPvP I’d agree with the Charr (or rather Norn = bulky, illusions confuse people a lot) vs Asura (small, hard to read) reasoning.
In WvW, racial skills can matter a lot more, however.
For example Avatar of Melandru and Hounds can be important in defending or chasing in smallest-scale encounters, while Asura golems tend to be… well… no. Especially the suit. Don’t underestimate an AE 2s Daze onto a freshly breached door zerg as a Norn, either. It’s usually suicide, but it usually also makes the defenders stomp the entire attacker force.
The strength of heart to face oneself has been made manifest. The persona Carighan has appeared.