Return of Reckoning

Some maths here and i don't know all the numbers so having to try work some out with a stopwatch and testing, someone can perhaps correct me:
- 2 star keep Ram
- 8 secs per hit on the door, average hit 3% = 100 / 3 = 34 hits to take 1 door down
- Equates too 272 secs + 15 secs to get the ram to the door and working + 60 secs avoiding Oil = 347 secs, nearly 6 minutes to destroy 1 door
- Cannon does 1% damage to ram, unlimited ammo on keep defences, not player spawned cannons, 5 secs per shot, so 1 cannon can do 100% damage to the ram in 100 shots, so 1 cannon can kill ram in 5 secs x 100 = 500 secs.
- Player does average 0.5% damage to ram per hit re-spawn and suicide jump to ram in 35 secs, so 9 times hitting ram for at least 0.5% = 4.5% damage per player minimum, often 1.5% (13.5%) before they die. This means it takes 100% / 4.5% = 23 players jumping at the ram attacking it to kill it minimum, likely 100% / 13.5% = 8 players suiciding can kill the ram by the time it destroyed the first door. Or 1 player hits the ram 200 times, 3 minutes of hitting the ram, a couple of healed and cross-guarded tanks can easily manage this and perhaps that's not right?.