That is a worse position to be in, due to having the same information, but later than sooner. Basic information/game theory...in game decisions, information is more valuable the sooner you can get it.
Or the math:
Assume a 2 pt conv has a 50% success rate
Assume an XP has a 100% conversion rate
If you take the sequence of
XP (100%) THEN
2-pt conversion (50%)
Your odds of winning are 50%.
Rather, if you take the sequence of 2-pt conversion, THEN (2nd decision based on the 1st outcome), your odds of winning are 62.5%.
If you make the first 2-pointer (50%) then you kick the XP for the win on the 2nd td. If you miss the first 2-pointer, then you go for 2 again on the 2nd td, which, if made, then leads to a 50% chance of winning in OT (.5 * .5 * .5 = 12.5%). 25% of the time you lose outright in regulation by failing back to back conversions. 62.5% chance of winning in total. Much better than 50%.