It is not so much that they would be sending Abrams to Ukraine that is peeving the Germans. It is the fact that a lot of NATO countries are looking to send their Leopards to Ukraine and then replace them with Abrams (like Poland is already doing). Because as it turns out, everyone wants American-made weapons now since their shit has been kicking all of the ass in Ukraine.

Personally, I would pay good money to see an Abrams tank take on a T-90MS

While I would too, I am afraid that it would be rather anti-climactic. After all, T-90's have been getting domed by Carl Gustaf's. The hell do you expect them to do against an actual tank (although like I said in my other post, I dont think tanks would fit Ukraine's doctrine as much as rapid forces).