HAHA looks like the "Battle has begun" so I might as well jump in on this... in my opinion the 4.6's have way better top end and the 5.0's have a little advantage on the low end... 1/4 the 4.6 will probably win stock vs stock but it might be close... 1/8 I'd have to give the advantage to the 5.0... for some reason the 4.6's seem to be a lot harder to launch than 5.0's too... although I have only driven one four or five times few of my friends that have owned both that I race always either bog or burn the tires with the 4.6... anyway BOTH cars are fast and I have much respect for both and both respond great to boltons... just depends on which one you personally prefer or sometimes which one your pocket book prefers.
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92 AOD GT, K&N, ram air, pulleys, 2 ch. flowmasters, 4:10's, shift kit, 1 5/8 mac longtubes and offroad hpipe 14.249 @ 97.34 mph before the headers and hpipe