Then we might as well not turn up next year....
If you only enter sporting contests you feel happy about the prospects of ultimate victory, then yes. Would be one hell of a task to organise a World Cup if that was the prevailing view.
Let's not beat around the bush. As things stand, our team is too unsettled and our attack is too inaccurate to realistically consider beating the Bokkes and the All Blacks in successive games. We might fluke one, but we're not doing both. Our work rate, defensive excellence (well, usually...) and mental strength allows us to hang in there with anyone (usually) and beat most teams, but it's not good enough to beat the very best, and it would be highly optimistic to suggest that's going to change in a year.
We are we were before. We have a strong foundation, but the next step looks bloody difficult.
Tbh, I'm more worried/impressed about the twenty minutes in which the All Blacks completely took away a game from us that we were leading in the 2nd test.
edit: And note - my pessimistic view about England probably explains my mild scepticism about the All Blacks. Shame there's only one and a half teams good enough to test it out!