the tiger was gas, as was the king tiger, the panther, the jagdpanther, etc and so were the panzer 3s and 4s
the shermans were made in both gas and diesel
"Now for some evidence provided by the US Army’s Ballistic Research Lab which studied WW2 ETO tank vs tank engagements(98 of them if you were wondering) and concluded the following: The most deciding factor of who wins a tank engagement is who engages first. Crew training and other factors also played a large role. The average distance at which a US tank kills a Panzer(late IV, V, & VI) was 893 yards(816 m). Comparatively the average distance Panzers killed US vehicles as 943 yards(862 m). During Panther v. M4 engagements the Panther had a 1.1:1 advantage while on the defensive, however the M4 had an 8.4:1 advantage while on the offensive. Overall the M4 was 3.6 times as effective in combat versus the Panther."
see here: ht tp://ftr.wot-news.com/2013/07/28/please-dont-use-the-5-m4s-1-panther-myth/