#2 Uneven contests
The UFC is characterised by different weight classes, with different championship titles for each, so as to be fair to the competitors involved.
With the exception of 205 Live, WWE has no such rules and regulations, considering that it is not a real sporting contest at all. As a result, we can see mismatched contests such as James Ellsworth taking on Braun Strowman or even Daniel Bryan going against the significantly larger Randy Orton and Dave Batista.
A female WWE star said her life is in danger. Details HERE
Truth be told, such mismatched contests sometimes make the best stories.
An ancillary point is that while every UFC fight is about sporting glory, WWE has different stories for every match, making them very interesting indeed. Moving on...