I always find it silly when people discuss the relative power of races based on the assumption of full BiS gear. How many players actually get there? Especially on a class that competes with warriors for gear? It's basically just a thought experiment at that point. It's especially odd when people start talking about putting points in strength to make the early levels easier, as if this discussion was anything more than empty theorycrafting.
Prior to ToV, SK gear has surprisingly little stamina. The Thurg/Kael/SS sets are what most will settle for as their final goal. Full sets have the following total stats:
Thurg - 31 STR, 12 STA, 1 AGI, 11 DEX, 29 INT
Kael - 38 STR, 11 STA, 8 AGI, 22 DEX, 29 INT
SS - 34 STR, 32 STA, 12 AGI, 25 DEX, 26 INT
If you have an eurdite with 75 stamina or whatever, you'll need 130 stamina from gear even with the shaman buff. 180 without it (it's one of the first buffs you want to get rid of to get an extra buff slot). You're not getting that with the kind of gear that 99.5% of players have any hopes of seeing.
Erudites are neat in a thought experiment. In the real world where almost nobody gets even half a set of ToV gear, it's a race that'll handicap you for life. It'll be like playing an extra bad version of a class that already kind of sucks.
Let's look at a more realistic set of gear that can actually be obtained by mortal men:
https://wiki.project1999.com/Magelo_Blue:AverageSK
That's with 15 points in stamina, too. And even that gear would be ambitious for the average player.
Talk about +5 MR as if it matters more than fifty points of stamina...