Lol.......I doubt its that way. Most of Protoss arsenal could counter siege tanks / Thor (The backbone of the Mech army)

Chargelot takes reduced damage against tanks, Thor not cost efficient against zealots
Stalkers can be blinked offensively or defensively
Immortal is your anti armour DPS and tanker
Mass Colo can break through the tips of siege lines very efficiently
Mass Void ray eats armour very quickly
Phoenix lift tanks
Tempest long range poke u to death while also giving AA AOE vs Vikings
Archons also tank hard and do bonus damage to bio (Hellbats)

With Hellbat, Chargelot and Blink stalkers are negated a bunch. Blink Stalkers can still pay off by Hit and run tactics.

Mech is very difficult to play especially against skytoss on maps with a lot of dead airspace and etc imo.

This post has been edited by DuskBin.Marksman: Aug 21 2013, 03:31 PM

Weak is relative.

TvT, it does fine.

TvZ, it does arguably possible

TvP....it's painful. Very painful....especially when you die to too many ways possible.