What is the PURPOSE of the Kain? T4 Gauss Guns + Magnedart ammo. It's designed as the Mech that goes into point-blank range and unloads. That means you have - assuming equal signal detection and mutual 1000m spotting - 940 meters to kill it or you will die. The speed-fit Kain is a GLASS CANNON.
Consider the investment though; in order to achieve its high speed the Kain must have either all T4 gear or alternatively, T4 gear with T2 guns (sacrificing a lot of DPS in the process). What is gained with this is just speed, nothing else. 1 Prometheus equally fitted can take out a speed-fit Kain.
While I completely understand why you people want T1 Light Bots to be the 2nd fastest thing in game barring ewars, you're merely beating your own drum. If your corp can't supply your mechs with T4 gear and better then light/ewar/assault bots, thats your problem and your choice.
Compare a speed-fit Kain to a speed-fit Artemis, or speed-fit Tyrannos; Yes the other mechs lose ~9-10kph of speed compared to the Kain, however Kain's optimal range is ~100 meters to utilize its mission ammo to achieve its purpose. Artemis - with Crypto ammo - fires at ~650m optimal range, Tyrannos fires at ~600m optimal range.
That in itself makes the Kain vastly inferior to the Artemis in a 1v1 situation, and probably coming out on top against a Tyrannos provided the player plays his cards right.
The only case in which a Kain could compete with an Artemis is if Missile Launchers were equipped, and missile-related skills were leveled. But, missile launchers would slow the Kain down to par with the other Mechs. It is the CHOICE of those who pilot speed-fit Kains not to equip missile launchers and forgo chances of killing an Artemis.
Now, what would be achieved with Light Bots in T1 fits being faster then Mechs in T4 fits? Only ewars could catch them, but ewars alone would never have the DPS (2 guns, no robot bonus) to take them out alone. If mechs couldn't achieve the speed to support the ewars, the pilots would have to bump down into Light Bots themselves.
At the end of the day, the two of you are whining because you want to be competitive with no effort. Light Bots are cheap to produce, and require no epriton; therefore no point in being on Beta to have the "best" bot/fit in the game. T1 fits can be farmed on Alpha as well. Kinda nice, having the fastest bot barring ewars in the game, with no effort and no tech-grind.