The thing to look at is, DID EVERYBODY THROTTLE UP AT THE SAME TIME AND DID ANYBODY GAIN AN ADVANTAGE BEFORE THE GREEN FLAG/ LIGHT...Flags anything

It is the responsibility of the rest of the field to keep pace with the pole sitter as long as the polesitter sets a "reasonable" pace before the start and maintains that pace until he reaches that designated point somewhere in turn 4 (or wherever the track or sanctioning body establishes it). The only problem that really can occur under this scenario is if a car, in any of the rows behind row 1, doesn't keep pace and holds up everyone behind him. If that happens, it's considered a false start, the car not keeping pace would be warned and if it happens twice, he goes to the tail, the same as if he had jumped the start.