and then i know that Dazza is the king or Rolling Thunder 
Yup I am indeed the MAME WR of Rolling Thunder

Ironically I played it the other day and didn't even get past level 3

I have always been pretty good at games but I have to love the game to get really good at it. I have the innate ability to replay something over and over again.... if I really love it!
Games I have mastered and could have a good chance at getting the WR (or come close):
Kicker / Shaolins Roads - Gave up at around 4 million (this would be an endurance thing)
Kyukyoko Tiger / Twin Cobra - Gave up on looping
Flying Shark - Gave up after looping 3 times with about 2 million
Track 'n' Field - Could loop around 15 times
Jackal / Top Gunner - Can complete with about 800k (can beat MARP and WR)
Alien Syndrome - Gave up after looping with about 800k
Splatterhouse - Can 1 life 1cc
Black Tiger - Can 1 life 1cc (would never WR as FunSpot has a "dodgy" version)
Biomechanical Toy - Can score around 11.5 million (best MARP is 13ish, WR is awful)
Rygar - Can 1cc (would need some serious work to get into WR scoring range though)
Scramble - Gave up on about 5th loop
Dragon's Lair / Dragon's Lair II / Space Ace - Can 1 life 1cc
Space Harrier - Could 1cc