The 60s MG was daily, as was the CBS 1973-79, daily SYndie 1979-82, MG90, and MG98. The only weekly version of MG(aside of one or two 60s primetime specials discussed several months ago in Ezboard) was MGPM. Assume 250 episodes a year for 60s MG time 6.75 years=about 1700 episodes. Add 250 episodes a year for the almost 6 years of MG79=1500 daytime episodes. Add to that 230 episodes of MGPM and 525 for the 1979-82 Daily SYndie. MG90 did about 245 and MG98-99 another 175(I think) episodes. That adds up to 4375 if my math is right.
I gave MG/HS the benefit of the doubt, which adds those 195 episodes.
To be fair, let's count MG/HS for both series.
Getting down to specifics, matchgame.org says:
Original version: Approximately 1760
70s daytime version: 1455
Match Game PM: 230
Match Game (syn 79-82): 525
Match Game/Hollywood Squares: 195
Match Game '90: 242
Add the 175 episodes of the last syndicated version (as good a guess as any) and we get 4,582.
Zach's pretty much dead-on for the Pyramid numbers too. According to Xanfan's episode guides, there were 4,275 of the original show. If Donny did 175, that's 4,450 total. So Pyramid would overtake Match Game for the #6 spot near the end of their current season.