It is easier to define what is an unassumingly diverse and ever-changing "WWE Style" by what conventional wisdom reduces it to.
Impact moves to the head are perceived as dangerous - a psychological kiss-off puckered by those who are as poor as crafting logical stories as Michael Bay. Heel and babyface roles are almost comically rigid. The audience is rarely entrusted to choose their own adventure. There is merchandise to be sold, and stars to market. WWE will make your decision for you, whether you like it or not.
Punches, kicks and rest holds are deployed with eye-rolling frequency, in order to imbue actual moves with meaning. A contest is not a fight to simulate, but a story to tell. Babyfaces are weak, and require crowd support to galvanise them - but they are also, paradoxically, invincible. Heels need to cheat to win, but not to dominate.
There is an element of truth to cliché, and these accusations of simplicity and homogeneity are not without merit - but that fabled WWE Style is so fluid that it is equally easy to argue that it may not actually exist...