Well I watched the Discovery Channel 2 or 3 days ago and it was the most recent one that I saw about the top 10 tanks.
This is what they said about each tank and why it got the place it did.
10-The sherman: PROS-Fast,easy to repair, mass produced, manuverable, and light,
CONS- In a 1 on 1 fight between a German tank it was basicly usless.
9-M-551A1 Sheridan: PROS-Very light (could be dropped out of airplanes),small (perfect for the jungle),it shot guided missiles instead of the conventional shell,fairly fast
CONS-because of its light aluminum body it was weak and had light armour.
8-Panther: PROS-Very thick armour, very powerful main gun 75mm/88mm, slopped armour (takin from the russians),well made,zimmerits (anti-mine coating)
CONS-To heavy and to slow, because the germans tried so hard to make them perfect there was never enough made,high fuel consumption,big tank big target.
7-T-72: PROS-powerful main gun 125mm,don't need a loader,very low to the ground,fast firing, pretty good armour.
CONS-you had to be 5'6" or smaller to fit in the tank,and the automatic loading system could catch an arm of the gunner. (thats why the gunners prefere the T-64).
6-S Tank: PROS-fast, can do a complete 180 (when driving then turning right away), low to the ground,hydrolic aiming system in the suspention, can dig into the ground,perfect defence tank,
CONS-no turret,not a good attack tank,have to get out of the tank and load it from the back, had to move the tank to aim the gun, and its only really useful in the Swedish forests.
5-Centurion: PROS-great design,fully automatic stabilization system, long service time (just after WWII till 1990)
CONS-hard to drive
4-Merkava: PROS-good design,very safe tank,forward mounted engine, design for urban and desert combat.
CONS- Its only use is to the Israeli army because it was designed for their needs only.
3-T-34: PROS-Very good design, fast, well armoured, slopped armour,powerful main gun 75mm/85mm/100mm,easy to repair, one of the only tanks that could stand up to the German tanks.
CONS-fuel consumption, weight.
2-M1A1 Abrams: PROS-Fast,good armour,uses a jet engine, manuverable.
CONS-Very high fuel consumption (uses 8 galons just to start the tank.
1-Leopard 2: PROS-Fast,good armour,manuverable,can plug a laptop into the tank and it will tell you exactly what wrong with it (this is the tanks computerized maintenance system) , land navigation system,The hybrid navigation system consists of a Global Positioning System (GPS) and an inertial navigation system,Thermal fire control. Easiest tank ever created to repair and maintain.
CONS-didn't have any
These are just some of the reasons why these tanks made the top ten list. I cant remember every exact word said about the tanks and i probably missed some things here and there. But now everyone knows what the Top Ten Greatest Tanks Ever, are. And just for kicks one of the jugdes was Tom Clancy, the rest were just tank designers, military personal, and that kind of thing.
Well hope this clears it up for you all.