I was watching a different game to you. Treloar was nowhere near his best (granted) but he was still getting in there and getting ball. His tackles weren't sticking as well as they would and that is what we were missing most from him.
My guess is that both he and Cogs weren't 100% and they only played them because we needed them today if we were to have a chance.
Ahern is not setting the world on fire in the NEAFL yet either. I'd play Townsend or Barrett before him.
Ahern has been named an emergency the last two weeks so would say his closer to a call up then you think and with Treloar he simply isn't running both ways and no doubt that is partly due to carrying an injury and that being the case its even more of reason to look at some other guys.