This is not so. Downed shields recharge at a flat 1.6 MJ/s as long as there's energy in the SYS capacitor: http://www.reddit.com/r/EliteDanger...ll_shields_recharge_while_active_at_the_same/
This is the really ridiculous part - should an Anaconda's shield charge at the same 1.6MJ/sec rate as a little Eagle? Its like handing the 'conda pilot a little drip tube and telling him to fill up the fuel tank with it. It might be okay for the Eagle but certainly gimps the 'conda.
Shield recharge should scale with the size of the ship - some ships could have slower or faster recharge, as well as having larger or smaller base shields etc.
The idea that all shields regardless of size charge at the same rate is utterly non-sensical.
OT: I think shield recharge in ststion should be faster (2-3x perhaps) and pilots should be able to expend cells or buy shield recharge as a 'repair'. Improve turnaround - remove the silly blast gate/drop thingy on medium and large pads, and let us get off the pad quicker and out of the door to have fun.