I don't really like either of their behavior is that support, but at least Frederick was brave enough to declare his feelings for Cordelia, something that she can't do. The last few lines make me a bit more hopeful, but that's because the support obviously needs to end on a "happy" note.
It is actually quite interesting that IntSys went down that path with this support though. I think this should of been their A support, with Cordelia rejecting him, or Frederick, realizing that she won't truly love him, is at peace with finally expressing his feeling for her and has decided to move on.
I don't think they should of been able to achieve an S support. It would of been much more satisfying and interesting for it to be an exploration of unrequited love, without the shoehorned happy ending.