CIMA study online course vs. Opentuition

Hey guys, I wanted to know whether there really is any difference between the paid lectures at CIMAstudy.com vis-a-vis the lectures available on Opentuition. Are the CIMAStudy lectures more in depth, or do both teach everything in the syllabus? Someone told me Opentuition only teaches the essentials and not the full syllabus, making it a problem later down the line at the next levels. Is this true? Help will be greatly appreciated. Thanks. All the best.