Harsh probably. Depends on how you tier them.
How so? Pele has won pretty much everything at club level with 3 WC's to boot in an era where the Brazilian championship was as good if not better than European leagues.
There's literally tons of highlights and full matches on youtube, dailymotion, 101 great goals and so forth for Pele. Especially against European opposition you can find his 200 goals or so and decent amount of highlights. Same goes for Maradona and even more.
Pele was a player that had simply no weakness and for me along with his dominance on every stage he played on is the best. Then come of course Maradona, Cruyff, Beckenbauer, Messi etc.
When you watch him you can see he is so far ahead of his peers, just like Messi is now sweeping all the records and highlights.
There are pre-war players that you can doubt whether all the "fairy tales" about them are true, but with Pele you will find plenty of videos to back his credentials up.
You have to take into consideration that Pele and to a slightly lesser extent Maradona, played during an era when football wasn't properly internationalized. Pele spent his entire career at one club and Maradona, despite moving around, never faced the sort of quality that we see in the present, where footballers from all walks of life are playing in the very best leagues. Their club careers were quite homogenous in that regard. If both played today they would be considered world class but not at GOAT level they are remembered by. As for CR7 - he is criminally underrated by people who can't seem to dislodge the ghosts players past. He and Messi are imo quite comfortably the two best footballers ever because they have demonstrated it for an unprecedented, protracted period of time during a period when the quality and competition in football have been the most intense.