Interesting stuff...I've always used Wallace, I input the weight and to get the ET/mph run I adjust the fwhp no. till it gets close on mph, but generally Wallace is 1 mph up especially if you 60 a bit better than it shows on the chart which tends to be the case mostly.
For instance as an example, and not to hijack the thread, our 3828 r/weight car 60's in the 1.43's, normally runs 125+126, has run 127.5........dyno'd here@695hp,... this is what shows@3828 with an input of 663fwhp with FULL EXHAUST>

Power to Weight Ratio: 5.77
60 Foot E.T. : 1.45
1/8 Mile E.T. : 6.59
1/8 Mile Trap Speed : 103.09
1/4 Mile E.T. : 10.45
1/4 Mile Trap Speed : 128

The tickets show lower increments apart from the ET which is accurate and within 4.5% of the dyno, I don't think the car is that good, perhaps the dyno is?.