But from what op is saying, there seems to be a big different between the both account as the already ban account was a business account while other was a personal account does this also applicable to both account?
The reasons why the accounts were created and how they are being used doesn't matter. Like I said, what matters is the person behind them.
Imagine that a user has 4 Bitcointalk accounts.
- Main account
- Account they use when they are on the phone
- Account for when they are travelling and outside of the country
- Business account
If any of the 4 accounts gets banned, the ban will apply to all accounts. The account owner and all their forum activities are affected by that ban, not just what they do with one account. That's the theory. In practice, it may look different.