Not just Bhima's, but Karna's as well. His chariot wheel sinks, & he pulls it out.
You are right about Arjun - had he been born w/ it, where would have been the need for Drona? As it is, he got divyastras from Indra & Shiva during his exile, & combined w/ what he's doing now, it should make him invincible. Like you said, he got where he became due to an untiring obsession w/ his practice - had Bhima or Nakul or anyone else been as dedicated, they'd have been champions like Arjun as well. The only one who came close to him, albeit in a different discipline, was Duryodhan in mace fighting.
One thing I wasn't too thrilled about - I'd have liked them to have shown more of Pandu w/ all his kids. He was shown just giving Yudhisthir some lessons on ruling. But instead of the market scenes & scene w/ Karna, since Pandu is about to die, whereas Dhritarashtra will remain around, they should have filled up Wednesday-Friday w/ Pandava family moments - Pandu w/ all his kids, all the kids playing. Oh, and make Arjun more believable - somehow no serial seems to capture him right. In DBSK, he looked like someone on anti-depressants, and here, he looks like a magician.
So Yudhisthir managed to teach ANS not to snatch laddoos from Bhima? Good start. Nice that Bhima is so generous here. I also think this is the last time we might see a happy Bhima, since next week onwards, w/ the Kauravas, he'll see their hatred first hand and they, rather than ANS, will be @ his receiving end. Can't wait to see him bully them 😈