Aerosmith is more popular than Megadeth, because they get played on the radio a lot more than Megadeth and sold more records as well.
Megadeth
Aerosmith
Aerosmith
Aerosmith is more popular in general than Kiss.
Aerosmith would be more popular then iron maiden.
Aerosmith
Aerosmith
Both bands are very popular, but ACDC reached the masses more than Megadeth so ACDC wins this one.
Green Day
It is difficult to single out any one Megadeth song as the number one song by Megadeth because the band was so popular. However, Holy Wars: The Punishment Due was one of Megadeth's most popular songs, so it could be argued that it is the number one song by Megadeth.
Metallica has actually had more number-one albums around the world than Aerosmith, even though Aerosmith existed first. So, it's gotta be Metallica in general.
The song Trust by Megadeth is 5 minutes and 13 seconds long. It is the first song of the seventh album by Megadeth titled Cryptic Writings. It was the most popular song of the album.