The answer to the question, who scored more, is the same as the answer to the question, what kind of underwear does @BobDole wear, boxers or briefs? Depends.
You have a couple of errors. Advancement points were awarded in 1997 at the same level as today, 1 for the championship round and 0.5 for the consolation round. The only difference was that in 1997 it was treated as a 64 man bracket when there were more than 32 wrestlers. That meant there was an extra advancement point on the championship side and an extra 0.5 advancement points on the consolation side for just the brackets with >32.
The other main difference was in 1997 you only got 1 bonus point for a tech fall without back points.
Adjusting for those differences by re-scoring Iowa using today's method gets you 171.5.
The only question, then, is were bonus easier to come by this year? That is where "Depends" comes in. Yes, it was easier to get majors and tech falls, but the increase in tech falls appears to have had an unintended consequence. The number of pin falls dropped. The obvious explanation would be that getting to a tech fall faster meant there wasn't as much opportunity to pin fall an overmatched opponent. But bonus points are somewhat volatile from year to year.
So, was this just a down year for bonus that was lifted a little by the easier major and tech? Or was this a normal bonus year where we traded off pin falls for tech falls, thereby offsetting the increase in majors?