Force victory. No I don't think so. The position would be unclear, but remember I'm playing black so to equalize the position by move 17 would also be a victory. No? By the way moving the king back to d2 is not an easy move to see or contemplate (but nice find)
Pawn Gambit vs. the English Opening

the opening resemebles the idea of BENKO gambit except black didnt follow with ...a4 and the ...c4 later would let black have strong grip on the centre

If he was in fact trying to play with ROT then he was doing it all wrong IMO. The idea is to develop your pieces while they're still on the back rank, not just overrun your opponent with pawns. His back rank pieces didn't appear to support his position well.

That was not a pawn storm - and you sure showed him why it was not so - it was just his soldiers running away in fear from the king, leaving him to stand all alone, waiting to die.
I personally play the English opening as white often. I know quite a few lines and it is fairly easy to understand. I know one of the main focuses is the d5 square. So with this in mind and being the black pieces I decided to gambit a pawn, just to take control of the center and occupy the d5 square. Since I think the live chess area is to learn and try new things "why not right?".
The game seemed to be fine as we both continued development and he started an aggressive kingside pawn storm on my un-castled king. Perhaps to aggressive...but I liked his moxie.
All that to say is I didn't find any games in the opening explorer with this speculative idea, but it worked out as I got a mate in
22 moves with a nice knight sacrifice and some tactics.