This is an indicator that Salesforce is able to sell its software with a margin of 87%. The rest can be put on developing the software and ensuring sales. SAP on the other hand sells the software with a margin of 52%. SAP has to rely on heavy support fees to keep its business running (54% of SAP's software related revenues come from support).
I think these differences are the key to why software in the enterprise will move towards the cloud. Security issues will just be solved, that's the beauty of technology.