Are 40K flamers more destructive than modern flamethrowers?

[Master Commander Ajax]

Anything 40k is automatically ten times more outrageous than any modern equivalent!

[Lord_Caerolion]

Not to mention covered in skulls.

[Wulf Vengis]

That's how you KNOW it's outrageously more effective than normal modern counterparts.

 

Getting mugged? No big deal.

The muggers gun has a skull bolted onto it? You're already doomed.

[Volt]

(Correct me if I'm wrong)

 

Modern flamethrowers eject a stream of ignited petroleum gel (i.e. napalm)

 

40K flamers eject a stream of ignited promethium gel (i.e. 40K "napalm")

 

Does the latter burn hotter than the former? To be effective against enemy Space Marines, I'm guessing that has to be the case?

Flamers can literally cremate people into ASH. Promethium makes IRL napalm jelly look like a fluffy bunny rabbit of incendiaries. I'd post pictures, but that'd get me banned, but to save you a google search napalm just makes people look like somebody forgot their chicken in the oven too long.

[bluntblade]

So, after all that's been posted, I guess the answer is a resounding yes.