Commercial fusion is not a few years away, and I've never seen the claim apart from deranged individuals on Twitter. If everything goes to plan, commercial fusion won't be here for a few decades.
What the claim may have been is experimental fusion, which does exist right now, we have generated power using fusion, and we even made more power than we put into it recently. It's moving, but it's slow, as planned for the last few decades.
Edge is based on chromium, so yes you can say it's just a reskinned chrome, the only other rendering engine now is gecko, which is what is used by Firefox and it's forks.