I'm not sure on that. Wenger has been saying Giroud is one of the best strikers in Europe and it's not the first time he's said something like this. He believes he has potential and can improve.
http://www.theguardian.com/football/...europe-arsenal
Maybe those are just words but if Wenger's actions were clear we'd have already found an upgrade on Giroud. It's really not clear. I think Wenger is indecisive when it comes to Giroud. We signed Welbeck because Giroud was injured remember? That's why it was a panic buy. Plus Welbeck has spent his career on the wings so he can fill in for Ox and Walcott. Also, he said Sanchez can play up front but if he really had him nailed on as our striker, he'd have stuck to playing him up front and signed a winger instead of Welbeck. Or maybe just played Welbeck on the left with Sanchez up front. I wouldn't use Sanchez as an example because Wenger hasn't played him up front since.
Suarez was an opportunity we went for but failed to land him. You can compare it to the Ozil signing. We had Cazorla and Jack for the number 10 role but Ozil was that good you couldn't afford to miss out on such a deal. I believe the same was the case for Suarez because we still didn't sign a striker in that window and we've yet to sign a first team striker to replace Giroud despite the many opportunities. Plenty players have moved that, in my opinion, would be an upgrade on Giroud but I don't know if Wenger feels that way. Does he feel they are that much better than Giroud or has the price tags scared him off? Regardless of price tags, if he felt that strongly about Giroud not being good enough up front, it's kind of crazy to persist with him for this long.