Is the melta gun under powered

Running van saar and managed to get a standard melta gun. Run it a few times and it feels like the suppression las is soooooooooo much better. Longer range, normally more damage and you get to reload. Has any one else had any luck with it?
 
Running van saar and managed to get a standard melta gun. Run it a few times and it feels like the suppression las is soooooooooo much better. Longer range, normally more damage and you get to reload. Has any one else had any luck with it?
I've not bought one, but one took my leader out, from full health (superior mesh, 43 health) in one shot & I don't remember a critical being mentioned

SOB
 
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