What makes you think that you can achieve this victory over Al Qaeda?
How many years evidence of failure on the part of the co-allition and other nations who are much closer (USSR) do you need before you accept that this war is unwinnable? It has already been going on longer than the second world war.
The situation the US is in and the situation the USSR was in are not exactly parallel scenarios in which you can blatantly draw this conclusion.
And let's be real about this, they don't exactly have the fire power of the US do they?
So what?
The fact is that western countries cannot deal with modern warfare where the enemy doesn't come walking over the hill wearing the same clothes as each other. Al Qaeda and the Taliban have shown quite remarkably how a small number of poorly armed but very determined guerilla fighters can frustrate a hugely well equipped modern army that is a long way from home.
What is it that you think will change to make an outcome any different to the one you see day in day out?
Strategy changes can result in enhanced partnerships with the local populations, a better economic environment to decrease potential recruitment, bring in more burden sharing with NATO etc etc... There are options.