I don't know, it could be many...
If he did mean Riis then I would say the comparison is yet another (all to frequent recently), poorly thought out, and carelessly flippant remark.
On one hand we have a rider that went from day racer, to GT champion, and protective patron of rider rights in what is known to be the most highly fuelled period of cycling, to retiree, to protective team owner, to confessor (yes after the statute of limitation but voluntarily), to team manager that opened his doors to criticism and the then most critical and respected scientist to come and clean up, and test all you want at my expense so we can get this issue resolved once and for all.
On the other hand you have a rider that went from day racer to opportunist that seizes a sport in shock, litigates, denies, vilifies those that speak, ruins careers, colludes with federations, dominates with a team that he oversees the fortification of, uses his domination to appropriate funds, power, and political ambition, intimidates witnesses, and even when the ride is over uses his final outbursts to preserve doubt and loyalty among his many vulnerable followers, in an attempt to preserve a lie that pays his way.
It's not the doping and the national body that is the difference. Its the gravity of the conspiracy that has been addressed, which relates to the severity of the penalty each has or will receive. Hopefully there will be orange jump suits ahead, removal of the puppet at the federation, and the original puppet master really controls the federation, and the the removal of the brain behind the victories, and the doctors who pumped the fuel will finally be excluded from all practice, and their dossiers used to illustrate the breadth of sports and athletes involved in doping.
Allegedly He might be reading because he dose a lot of that...
Did you read that a few paralympians are going down following surveillance of Wonderboy's doctor? I was shocked but unsurprised.