That can't be overruled no matter what the on-field call was. But because the refs wanted the automatic review, rather than call what they see, they elected to call a TD which will send it to replay, which in this case will result in a Pats touchdown standing due to inconclusive video evidence. This is definitely the downside of replay - the option for the on-field crew not to make the call according to their judgement, but according to CYA.