Difference being Murray has a winning H2H against Federer and Grass is also HIS best surface, whereas clay is by far the worst.
No-one's saying you can't be excited. Just personally I'm not remotely fussed at a meeting with Rafa on clay.
Anyway, Murray's got to get there first.
They both have to get there first. You can never make ANY assumptions in tennis. (As Russia found out ) as to the result if they do play well you ever know. Lol