Mechs or Tanks, An age old C&C question, which is better? Options

[Darkstorm]

Just a simple question seeing as how C&C 4 is going back to what seems a mech based game similar to TS (though not nearly as good). I personally think in the situation they have it set in Mechs seem logical since they allow you to be above the Tiberium. Tanks are ok but seem a bit illogical since Tiberium would make it hard to move around. I thought I'd ask for your opinions.

[Lightstorm]

Nothing built in our world has yet to prove itself more effective in a battlefield then a low slung heavily armored main battle tank.

If you look at the needs of the military when they use a tank, it becomes very clear why a tank is preferred.

Needs of a modern military in regards to a main battle tank:
infantry support - defending foot soldiers against threats too heavy for their guns to damage.
fixed emplacement attacks - destroying roadblocks, bunkers, machine gun nests, mortar pits, and trench emplacements
speed - be able to keep up with jeeps, trucks and other transport vehicles, as well as outrunning enemy bombing runs
anti-armor - the ability to destroy opposing tanks

with these goals in mind, we have the two categories of main battle vehicle:

tracked:
speed to keep up with smaller vehicles
slow slung harder to hit
powerful main gun
difficultly traversing forest and mountain terrain
great mobility in desert terrain

legged:
slower then wheeled vehicles, vulnerable to airstrikes
greater height makes a larger target
ease of mobility in rough terrain
greater height provides field of sight

with this in mind, in a normal battlefield, its easy to see that the benefits of a standard tank outweigh that of the legged vehicle, and in fact, there is little reason for any military to rely on them. EXCEPT, when the fighting moves into heavy urban warfare, or into thick jungles. Lets look at the locations of the Nod strongholds in Tiberian Sun: The rocky mountains, the amazon, eastern Europe, Italy, and Egypt. Except for Egypt, they were fighting in rough mountainous, dangerously mutated terrain, its easy to see why they would choose to switch over to legged vehicles given their combat environments, however by the time Ti8berium Wars rolled around, those mutated forests had been killed off by their own mutations, making standard tanks again the best choice.