Yes, the division between groups (pro/anti) created while gamergate was going on were about the same. On one side people calling for social justice on the other side the people that in a way are against social justice + the ones that did not want to choose a side.
At the beginning gamergate was just about ethics in journalism (mostly in gaming).
The Trump and (early on) Carson supporters needed a term to distinguish themselves from the established Republican base, consisting largely of neocons and evangelicals, with their rather different ideological concerns. "Alt-right" offered the vaguely young/edgy and sans-culottesque character they needed.
Example: Cernovich works with Fairbanks who is employed by Russian propaganda site Sputnik.
http://www.independent.co.uk/news/world/americas/us-politics...