from what I remember, bursts do more hull damage per energy than the other two laser types, so they're a solid choice.
Off-topic, but @Quineloe, when I first started reading these forums two years ago, you were one of the regular contributors I most remember. Good to see you're back and thanks for your past contributions.
On-topic, we now have access to pretty much all of Frontier's in-game weapon data, which I collate/extrapolate in this thread...
https://forums.frontier.co.uk/showthread.php/246086-Official-FDev-Damage-Stats-for-Every-Weapon
...from that, as taken from Outfitting, we can see that bursts and pulses share Armour Piercing Value of 65, slightly higher than beams at 60.
I must admit that I, too, both read and personally 'felt' that bursts were better against hull than the other lasers, although it's difficult now to see a reason for that in the numbers.
Finally, I would like to join the chorus of revulsion at the c4 burst. In principle I like two of them on my PvE Corvette but in practice the firing cycle is just too horrible.