I looked, but could not find, specs for the MXV-5100; sorry.
It probably has more gain than the Antennacraft Y10-7-13 VHF Yagi on VHF-High:
http://www.antennacraft.com/pdfs/Y10-7-13.pdf
and more gain than the Winegard HD8200U on VHF-Low:
http://www.solidsignal.com/pview.asp?p=hd8200u
and more than the Winegard YA-1026:
http://www.starkelectronic.com/wya1026.htm
http://www.wtfda.org/nn2e/