Actually the six guns up front do look the part of one actual battery!
The line batteries are in the first row. In the second row, line horse batteries on the left, the Young Guard (1814) - or those line units in overcoats - next to them, then the 12 pounder Guard foot batteries with finally the lone Guard horse battery in the second row on the right. 14 guns in total representing some 460 cannon in total. All are Perrys.
I must interject that we wargamers all deal with silly ratios. 1:20, 1:33, 1:100 or 1:2,500. It is really all in perception. I want a high level, player is a corps commander thing. It works. It looks good on the table. I still get to use 28mm figures.