To be honest Mekkah, I don't like your new spread at all :/
Me neither. It is more of a result of throwing around points until all the requirements were fulfilled than anything. Anyway, the 25% difference confirming will allow me to cook up a new one within a few seconds.
I seriously think that making this Pokemon's defense anymore defensive on average would be going too far.
Well, seeing as speed is "stuck" at 60, and giving it above average Special Attack will sure as hell deem it too powerful, there really is no way. What I did is try to get Special Defense as low as the arbitrary line allowed it, so that Special Attacks at least could penetrate it, while remaining a solid physical buffer. But it wasn't as researched as my previous spread.
EDIT: Alright, I reverted back to my old spread seeing as it was legal after all. It is pretty much like aldaron's, except that I managed to round every significant number to the nearest 5 for easier calculations.
My final spread:
120 / 67 / 105 / 90 / 95 / 60 - Total 537
60 Speed has been explained plenty: lower than Tyranitar, ties with Swampert.
The 67 attack is the absolute maximum you get with 90 Special Attack. I used it to round out the other stats nicely, again, so you can memorize the real stats more easily, as well as draw comparisons to other Pokemon.
120/105 Defense means business. It takes hits slightly better than Skarmory and Hippowdon (assuming type coefficients are equal) by about 2-4%. I've explained this before: this makes for a wall that can take hits excellently, but is weakened by Stealth Rock to prevent it from being broken.
With its STABs, it doesn't need more than 90 Special Attack to be useful for this task. It 2HKOs Hippowdon, Skarmory, Celebi, Jirachi and OHKOs Swampert with little investment.
Grass Knot from 216 (its minimum) Special Attack already 3HKOs a 404 HP Tyranitar with Leftovers unless you roll very close to the minimum damage three times.
With Hidden Power Ice, it already knocks off 2/3 off Salamence's health with minimum damage.
It does somewhere between 214 and 252 damage to a minimum SpDef Garchomp, and his maximum HP is 420, so needless to say he is getting 2HKOed as well unless you as unlucky to roll minimum damage twice.
95 base SpDef puts it slightly below Celebi in its overall SpDef department. For example, a max HP/min SpDef Celebi takes 2-3% more from a 264 Special Attack Ice Beam compared to max HP/min SpDef Woodman.
It seems to me that the way the lines were set up, combined with the typing and the BST, really made it impossible not to turn into a good Pokemon. No matter which distribution you pick, it will be unable to fail in either the offensive or the defensive department. The more you try to make one of them bad, the more broken the other becomes. What I've tried to do was make both sides good, so it stays usable but not too good. A good attempt at a centralizing force and a stallbreaker at its finest, while keeping your own team safe from assaults as well.