This should finally end any comments about Anderson or Broad not being world class. The pair have 632 combined wickets as a combo and both been match winners in every continent on earth that cricket is played. Superb and Anderson as a bowler must be on a par with steyn. A few months time should confirm that statement.
I think they are excellent bowlers, but as for Anderson being on par with Dale Steyn? Steyn's average of 22.5 vs Anderson's of 29.2. Steyn's SR of one wicket every 41.4 balls vs Anderson's 57.6. Steyn 24 5WI vs Anderson's 18. Sure Anderson has 20 more wickets but he has bowled in 55 more innings.
Don't get me wrong, I think Anderson is fantastic and certainly world class, but he isn't on par with Dale Steyn. I would say Broad and Anderson are second behind Steyn and Philander though as a pace attack.