I concur. There is 2-3 classes who twink at 10 who have one or more stats in the 295%+ range. Some even higher. The highest stats I have seen in Frostwolf twink history is 3.6k Haste from a lvl 10 Shadow Priest, second a Druid coming close to 2.7k Haste when everything procs. Diminishing returns take affect after one has hit lvl 11 and onward, said stats I speak of will gradually reduce. 100% crit is child's play compared to the other stats that are abnormal and openly abused, in addition to the air-raiding bomb attack that can be used by anyone, even a lvl 10, to hit for nearly 7k to 8k on use, let's not forget about spell power rogues too, who hit 4 times as hard as any lvl 10 rogue when using a total of 3-4 mixed poisons. These tactics are concerned "playing dirty" as the 70s used to put it. No lvl 55 would want to be 1 shotted by a missile flying out of the hands of a lvl 10 or unable to removed a high ticking proc that is unseen and rare to many players. There are secondary stats and dirty tricks that are far more lethal than 100% crit.
I do agree twinking is a bit balanced around the 70+ range, but the wonkiness is the twinks below. There is a few twinks who have gone above and beyond the rest, making them a power house that is at times near impossible to deal with. Each 72 I have seen have a specific stat they like and will do anything to boost it. For example, there is only 1 72 rogue with 3.5k attack power or a twink who has all critting attacks because of 90% crit. It varies.
Frostwolf twinking or 70+ arenas was the only viable and fastest way to gain cp, however the community has fallen because of bug issues that plague the bracket. The good thing tho is during those days we never had bots or wintraders, there was a few instances of people with 450 weapons howevwr we made deal with some of them who comply.
In short, some twinks take advantage of some enchants and items not for their level, giving them an increased edge over others, especially certain classes and specs. The twinking community had a good run for the bug has plagued the community and separated it for so long.
For me, I am ghost twink, more of a representation for them, and the only twinks that remaim is a few of us, and other groups shattered within the guilds, Vwrbally Violent and Devastation for example.
My only hint for you is to experiment with all enchants and buffs on a decked out level 10 and you will see what I speak of, check the stats as you do it too.