The current WWE Universal Heavyweight Champion Roman Reigns is indeed the biggest name in WWE today. He had been portrayed as the face of the promotion for years. Currently, he is enjoying an iconic World title reign which crossed 1000 day mark recently.
The Undertaker who is one of the biggest legends of WWE recently shared massive praise for Roman Reigns. He said that he is doing a “phenomenal” job right now but he was still not sure if he could be compared to Hulk Hogan or Steve Austin at this moment. Here is what the WWE Hall of Famer had to say;

Legendary Endorsement: WWE Icon Delivers Massive Praise For Roman Reigns, “He’s Doing A Phenomenal Job”
“He’s doing a phenomenal job. His character, his talent and everything has grown exponentially through this run. It’s arguably one of the greatest runs ever. I like it because it’s such an old school move, to have the title that long.” Said the WWE Hall of Famer.
The Undertaker continued, “He’s got to be in the conversation. But do you put him in the same boat as Stone Cold Steve Austin, or Hulk Hogan? I don’t know. Everything’s so subjective when it comes to that.” The Phenom expressed his doubts.

“Reigns has the claim to fame now. He’s the man. I mean, it’s not even close, really. He’s had the title for a thousand days. Business is incredible. He picks his own schedule. He’s got a claim, he’s got an argument. I’m really proud of him for how he’s come. It really has been impressive.” Concluded the former seven times WWE World Champion.
Roman Reigns recently became the first WWE star to hold a WWE World Championship for over 1000 days in 36 long years. He is now only two weeks away from breaking the record of WWE Hall of Famer Pedro Morales who had a stunning World Championship reign of 1027 days.

There are rumours that WWE has bigger plans for Roman Reigns as he is rumoured to break the record of wresting legend Hulk Hogan who set the record of holding the title for 1474 days. Moreover, Roman Reigns is currently the biggest project of WWE and he has an amazing future in the promotion.
H/t to Fightful for the use of transcriptions.