The lady who helped my husband prepare his HSMP told him that. She was not an immigration specialist though, she was just doing his forms b/c he does contract work for them.
Thus far, my only concern regarding sponsoring is the amount of income my husband reports. He is in IT, the tax scheme he uses (completely legal) only shows reported income as 1000 pounds a month, and the rest of his monthly income gets paid to him as a loan that has 0% interest for 100 years.