How can SuperCacher actually stop hosting headaches for agencies managing 10-100 WordPress sites?

https://ourcodeworld.com/articles/read/2564/best-hosting-for-web-design-agencies-managing-wordpress-websites

Which questions about SuperCacher and agency hosting am I answering, and why should you care? Agencies running dozens of client WordPress sites face recurring problems: slow pages, random spikes in CPU, broken client features after a cache