There is no favorite class. Each has their strengths and weaknesses. Just because one class can do something better than another does not mean they’re favored. It means they’re a different class, serving a different purpose.
Accept that, or you can complain until the end of time. The choice only affects you and your time.
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It is unlikely a $3.8billion corporation is favoring a particular class of its game product. However making one - or simply stumbling into - classes being better creates popularity. That popularity then soon becomes a taskmaster because any company then dislikes losing customers. In other words they created a monster and now are subject to it. Eg the overwhelming popularity of Hunter, especially in PvP. Secondly, just because a company doesn't favor a class of its product doesn't mean they don't make garbage decisions to the detriment of its customers. Case(s) in point: how Solar 3.0, Arc 3.0, to go with BL-Shatterdive era Stasis Warlock has been mishandled. Hugely so, not by a small amount.