A MR314 is much, much bigger than the ME102. You could sit a tiny 4 port Netgear hub like the EN104TP on top of the ME102 and it would still be smaller than the MR314.

I doubt very much whether the firmwares are similar, the MR314 is a much more complex device, being a router and NAT box rather than just a bridge.
_________________________
Remind me to change my signature to something more interesting someday