I thought it was the Italian Ariete jobby that would only run in reverse?
Same old tub-thumping coming up? Yawn,
Anyway it's horses for courses, & who got to spend the pennies on the shiny things! of course, we are all objective scientists & engineers here aren't we? They are all designed to different criteria, according to what the respective design specs were.
Britian got Challenger1's because a near-eastern country had a regime change & the Shir 1 design was adapted to the Cholly 1, (which as fielded in OP Telic, didn't have adequate dust filters initially!). This led to the Challenger 1 & 2 earlier than otherwise planned.
Designed to field against the Russian T72/T80's in Europe.
Its rifled 120mm can and did hit moving targets from a moving platform at up to a (verified!) 2 1/2 miles.
One broke down in GW1, & survived 120mm rounds at point-blank range to disable it.
The only combat loss in GW1
The US/German joint committee designed & then cancelled camel-pig MBT 70 led to the M1 Abrhams and the Leo series.
The US got the Abrams ( BRITISH CHOBHAM Armour, GERMAN Smoothbore 120mm), fast but needs to fuel every 4 hours.
Nick-named 'the RONSON TOASTER' as it lights first-time everytime & burns very well.
The French nicked ideas from everybody, & made their own toy LeClerk that has never been tested in combat.
The Italians have an MBT 'Lite' based in part to Leo1, & designed for Italian conditions.
Rumour has it that where the Cholly has a BV (Boiling Vessel) for chow, the Ariete has a Cappuchino machine?
Let the informed opinion commence?