I don't think the Colts were necessarily soft, but that they had a few weaknesses that the Patriots were able to exploit. Apparently their biggest weakness was their front seven were vulnerable to the run when the opposing team also had an effective passing attack. The Colts were able to beat Denver because the Broncos had weaknesses to exploit, and the Colts took advantage of them.
The Colts were a relatively young team. They will be better as they gain more experience, and they are probably just a couple more players away from being a contender.
The Colts were a relatively young team. They will be better as they gain more experience, and they are probably just a couple more players away from being a contender.