It’s a tricky question but the premise of your own opinion to assurance of winning which means it’s a sure bet for you but not 100% accurate based on the actual game.

But assuming you meant a guaranteed 100% winning like arbitrage betting then I believe it’s not already gambling because there’s no risk involved on your bet due to guaranteed +EV regardless what will be the outcome of the game.

In short you are not gambling because there’s no risk of losing.