Ah darn! I read some data on the Centurion and Patton, and typed it in... then lost it by clicking a link
M48 Patton (same model?) weigh 52 tons and are equipped with a 90mm or 105mm rifled gun. They seem to have lacked close-range defenses. Failed in Vietnam; the crew spent much of their time on it's back with an M16 for protection. Vulnerable to mines and ran on petrol. Selected by Jordan, Tunisia, Pakistan, Spain, &c.
Centurion are equipped with a 105mm L7 rifled gun. There were at least 8 versions. Selected by India, Sweden, S.Africa, Australia, &c. Also saw action in Vietnam though I found no accounts. Early versions ran on petrol, but later upgrades swapped to deisel. Slower than a Patton.
Centurion's Battle Honours..
Designed in
1943 as the "Universal Tank", first seen in the UK before the end of WW2, and served with the British Army in Korea. Centurion served in Australia from 1951 to 1977, being replaced by the Leopard.
Centurion were again upgraded in
1991, with modern armour, double floor, improved fire detection/suppression system, improved side-skirts, day/night sights, laser rangefinder, improved suspension, and 900hp powerplant.
Following introduction of the Merkava 4 tank, October
2002, the IDF phased out its last Centurion MBTs. Still in service elsewhere.
Scale drawings make these two MBT look similarly sized to me, despite the Centurion being quite a bit older. The actual dimensions were given with different units, and I couldn't be bothered to convert them.
Interesting read on the Centurion - recommended.