Those are more like universal themes or huge generalities than coincidences or borrowed sources. TES and Transformers are hardly the only two places where you find a race overthrowing its oppressors.
Let's see what else I can think of.
Controversial retcons.
Broken fanbase.
Evil, immensely powerful being who gets struck down with his own spear.
Frequent usage of Macguffin-activated Deus Ex Machina.
Lots of identical flying foes.
OK, so it's still not
that similar. But I like to find similarities in things. I could link everything to UESP and TFWiki to better elaborate on everything, but I just don't feel up to it.
Disclaimer: By "broken" I means "sharply divided".