I going to be assuming that the Flashpup is similar enough to the Flash, to chime in here.
Watching the shooting of flash pups, Gauntlet 1 and Gauntlet 2, I would say the .25 Gauntlet 2 is the best of them, that is having seen the Gauntlet 2 in both .25 and .22 , compared to the Gauntlet 1 in .22, running 3rd here. The .22 flashpups, one wood, one synthetic, the wood stocked one is better than the synthetic one. The Flashpups shoot probably as good as the gauntlet 1, but the second generation Gauntlet is, from the two I have handled, better than the Flashpup.
The bottle on the Gauntlet is an advantage, and the Gauntlet has some considerable aftermarket support, to say the least.