No I certainly don't. I can't see any similarities at all, other than they both have dance ability. I would say at the moment that Emma suits the ballroom dances extremely well,being more poised and elegant, whereas Louisa, being so young and lively is perhaps more suited at the momet to latin. That may change of course. Why could Emma be in Eastenders, she isn't an actress (although you could argue that many in eastenders aren't either!)
Sorry, but I can't see that they are in any way too similar,any more than any of the other celebrities. It is not as if they are the only two in it after all, and all of them are different to each other.
Since when has a career revival on SCD led to work on Eastenders, it hasn't so far, so why should it now? I could also point out that the one who has jumped up and down the most so far is Jan. I find this a very odd comparison for a thread actually.