The trick to Leadership is when to use it (maybe thats what makes you a Leader? LOL

)
IF I fire Broadsides and then use LS right away - its a waste. The BS won't fire again because though they are recharging faster - they don't finish before LS runs out and they reset back to normal...
But if they are 1/2 charged and you hit LS - now just before LS runs out I can use them again
As Edward mentions... its all in the timing