It's atrocious. But, if I may add to that obvious assertion one further: death from electrocution can take as long (say if the heart is still beating five minutes after the first shock has been administered, they'll go ahead and have another go), and being fried isn't necessarily easier on the senses. I don't know if lethal injection is any better come to that, what with the prolonged armageddon of lungs collapsing and heart stopping. And the US has repeatedly scored way higher than Iran in the global executions stake.