WW is class 100 strength versus Spiderman's class 15. WW has far superior fighting skills and unlike WW's lasso, the Web Head's webbing isn't unbreakable, especially by someone with WWs strength. The only area where it's even close is the speed catagory but WW has the edge here too. In the end, Diana crush Peter Parker like, well, a spider.
Yes spiderman is a tactical genius. He has outsmarted many a foe (even smart ones). Spiderman can lift over 50 tons in times of great stress (his strength reaches uncharted territory). His reflexes is also 40 times that of a normal human (to him a bullet is moving at about 20mph). His spidersense jerks him out of danger without his knowledge (in some cases before the attack actually happens). Technically, spiderman is never suppose to get hit. He take hits because lazy writers don't know how to add adversity to the story. Spiderman has also defeated many foes just as powerful (if not more) as wonderwoman. So technically, he is superior to most superpowered beings. Also diana is only faster than spidey while flying. In comics she moves pretty slowly unless she is blocking bullets (she is not bullet proof) while spidey becomes a blur (multiples of spiderman appear) on several occassions. Spidey finds a way to stop or kill diana. Also diana needs air to breath.