DY,
No you are very confused and your last post highlights your confusion. Do not fret though I am happy to explain.
Supply and demand works both ways in dating. There is an excess of guy dates available. 300 for every 112 girls according to the numbers you provided. According to the laws of supply and demand. unless some artificial factors were in play. All girls should have more than one date. Yet they do not thus there are artificial barriers in place preventing some girls from getting there fair share of dates.
I do agree with AZ that some girls married boys younger than they. Newsflash many still do. Though it is not less common now than in the past So in no way does this explain why the “shiduch crises” is more pronounced now. The “age gap” as an explanation to the “shiduch crises” is hogwash with nothing but anecdotal evidence to back it up. and doesn’t even explain the “dating divide” (TM you heard it here first)
If we come up with ways to remove artificial barriers that prevent gitrls from getting dates, more will get dates. And perforce more will get married.