The only time I've let this type of situation affect my lineup is in situations where I might be up big and I have a WR that my opponents QB will be throwing to on Sunday/Monday night. Or, if I'm down big early and I'm starting a WR that his QB is throwing to (never gonna catch up).
For instance -- Last year I was playing someone who had Romo early in the year, playing on Monday night. I had Austin on the bench. After the early games I had a huge lead, so I swapped out my WR for Austin, hedging Romo having a massive game with the Austin play. Romo tossed 5 INTs so I didn't have to worry, but had he thrown 5 TDs, Austin was a likely to be on the receiving end of 1 or 2 of those. On the flip side, had I been down big, playing Austin wouldn't have done anything for me as his QB was getting pts along with Austin (not as many, but if you're down big, you need more than a 2 pts advantage on TDs).
Other than circumstantial moves like that, I agree with everyone else. Play who is going to give you the most points regardless of who your opponent is playing.