In the context of field strength, how would you guys compare Tom Watson’s career to Phil Mickelson’s?
What can be shown is that there are FAR MORE one-off major winners in the Woods era than during the 60's-80's. The high level competition was there, but the best players were able to take advantage of a shallower field.
Piggybacking off of Alex's comment here and how that relates to depth of field. I took a look at the list of one time major winners in both the Jack era and Tiger era. I used the years 1962-1986 for Jack (first to last major won, 96 total majors) and 1997-present (88 total majors)
Jack's era 21 one time major winners
Craig Stadler, Tommy Aaron, Charles Coody, George Archer, Bob Goalby, Gay Brewer, Ken Venturi, Orville, Moody, Lou Graham, Jerry Pate, Bill Rogers, Tony Lema, Bob Charles, Bobby Nichols, Dave Marr, Al Geiberger, Don January, Lanny Wadkins, John Mahaffey, Hal Sutton, Bob Tway
Tiger's era 37 one time major winners
Patrick Reed, Sergio Garcia, Danny Willett, Adam Scott, Charl Schwartzel, Trevor Immelman, Mike Weir, Jim Furyk, Michael Campbell, Geoff Ogilvy, Lucas Glover, Graeme McDowell, Webb Simpson, Justin Rose, Dustin Johnson, Gary Woodland, Francesco Molinari, Henrik Stenson, Darren Clarke, Louis Oosthuizen, Stewart Cink, Todd Hamilton, Ben Curtis, David Duval, Paul Lawrie, Justin Leonard, Davis Love III, David Toms, Rich Beem, Shaun Micheel, YE Yang, Keegan Bradley, Jason Dufner, Jason Day, Jimmy Walker, Justin Thomas, Shane Lowry
While I do think the number is at least a little inflated due to a few of these guys still having long careers ahead of them (Justin Thomas, Dustin Johnson, Patrick Reed, Justin Rose, Gary Woodland, etc.) I think the numbers show how many more players in Tiger's era could compete.