Question About Flight Manuals

I recently bought a copy of the F-102 Delta Dagger pilot’s operating manual from amazon.com, and it’s really quite a fascinating ready. I’ve always been enthralled with the Deuce, and I figured it would just help me to learn more about it.

One thing that I noticed that really surprised me is that the typical touchdown speed in this aircraft is around 130 kts. This is somewhat slower than I expected as I was under the impression that delta-winged jets have pretty high landing speeds. Can anyone explain this anomaly? Anyone here know the landing speeds for the Mirage III or other delta-winged jets of the period?

Additionally, while not in the manual, I recently heard that the F-102 is capable of somewhere around Mach 1.5 whereas the figure you normally hear is about Mach 1.25. Could it be that this commonly accepted figure of Mach 1.25 is the maximum speed with two tanks and a weapons load, while the Mach 1.5 would be clean with no tanks and/or weapons?

I’ve always thought the Deuce looked to be a very clean airplane, and it has a slightly better TWR ratio than the F-100 which uses the same engine, so why shouldn’t the Deuce be faster than the Hun? (even if not by much) Is Mach 1.5 really that unreasonable for the F-102 to achieve in level flight by an aircraft with the Case XX wing?