I'm not so sure, if we compare froome to roglic for example I believe roglic is a more gifted athlete than froome, both as a GC rider and as a one day rider. Now froome has 4 TDF and roglic zero, and you probably base your statement on this fact but you also have to go beyond just stats. I want you to just look at the riders that shared the podium with froome in the 4 TDF he won: quintana, rodriguez, valverde, bardet, uran. They all have in common two things: they were either average or mediocre TT riders and apart from maybe quintana they were all average long climb riders. Put these riders against roglic and he would win the TDF EVERY SINGLE YEAR (provided he doesn't crash).Roglic is not a legend of this sport. Other 2 are
Outside the TDF there is no doubt that Roglic's career is superior than Froome. So personally I consider roglic on par with froome career wise, but simply because Froome took advantadge of very weak competition in the tdf for many years.