nonresonant cap = imcomplete charge ?

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Original poster: "Laurence Davis by way of Terry Fritz <twftesla-at-qwest-dot-net>" <meknar-at-hotmail-dot-com>

Call me thick headed, but...
I understand how a less than resonant cap
(i.e. xfmr req 27.5nf and tank cap is say 12nf or some number below 27.5) 
does not use all of the power of the xfmr energy.

with a LTR cap, the energy from the xfmr charges the cap, and then
there is still time left in the cycle that is not charging the cap.
this equals less energy per bang.

but I've heard that (or maybe misunderstood) a GTR cap (as above xfmr
req 27.5, tank is greater than 27.5, say 35nf)....
so I've heard that a GTR cap is not as efficient as a resonant cap.
it was stated that less energy is stored than a resonant cap.

is it the impedance of charging of the capacitor? the charge rate of the 
capacitor is not a straight line.  so it would then follow that if the 
charge rate is not a line, that if a GTR cap contains less energy than a 
resonant cap, then the average charging rate should be less than a resonant 
cap compared to a GTR cap.

am i on track or completely lost?
thanks,
larry.