1) Frog Host is unlimited hosting, and Hawk Host is not. Hawk Host also offers reseller plans / VPS, and is cheaper. But yes Hawk Host owned / run by the same company (Hawk Host Inc)

2) It’s all user based — if you’ve got 100,000 users and 1,500 active every minute of every day, you’re probably going to need to be off shared hosting. If you order cPanel with the VPS Hawk Host can assist in the migration of the site between companies.

3) Hawk Host is a smaller, more personal company. Hawk Host become familiar with you and your account and you’ll become familiar with HawkHost. Most people like the personalized service Hawk Host can offer compared to larger companies where you’re just a number to them.