Can I get any articles about the opposition (which seems to be formed of many member groups) are as bad, nearly as bad, or worse than Maduro?
I don't think that's possible. And not just because Maduro happens to be one of the most incompetent, venal leaders of the past few decades.
As bad, nearly or worse than Maduro would be quite the accomplishment considering that Maduro holds nearly all the power and has the finesse of a troglodite. Lately there's been a few incidents of roadside bombs aiming at the police and that crazed policeman (Óscar Pérez) who took an helicopter and attacked the highest court using grenades. Then there's widespread
sectarian violence. The problem is that international mainstream media rarely make political distinctions between the victims, which means you get extreme one-sided reporting from the usual partisan outlets. Radicalism thrives across the entire spectrum of Venezuelan politics, although Maduro has the benefit of owning the resources of the state.
Still, the best way to measure the moral and democratic character of the leading opposition figures (I'm using opposition in very broad terms, as that's basically anybody not running under Maduro's flag) would be to look into the business ties of the Capriles family, the
allegations of corruption linked to the Odebrecht scandal and the rather disturbing coordination with Spain's PP to hurl made up accusations against Podemos (which has a history of being cozy with the Venezuelan government). This bizarre display of transatlantic support implies the existence of extremely close ties between Venezuelan rightish oppositors and Spanish conservatives, whom were kept abreast of the 2002 failed coup and supported Pedro Carmona right off the bat. There's quite a bit of
international intrigue there if you are willing to dive into a mountain of mostly RT and Telesur trash.
The situation in Venezuela is not unlike the one prior a major civil conflict such as Syria's. You've got an authocratic, corrupt government silencing anybody protesting against it, raging yet decent people standing against Dear Leader, corrupt politicians willing to make a tidy profit (conservative leaders coming from old money, corrupt chavists getting rich off two-faced businessmen and their own "revolutionary" schemes) and ultraconservative nutjobs trying counter Maduro's own. It's an ugly, complex situation with many internal and international interests throw in that will degenerate into something worse if it's allowed to continue.
They are not even remotely comparable. There's only one government suppressing dissent after all. But the situation is such a huge mess that using black and white optics is futile, specially since the opposition is a political kaleidoscope. Civil conflicts are messy affairs like that. I honestly think it's time for a UN mandate.