What makes resource ERP solution different from others?

The scope of your question is very wide as the word "Others" can be used for many sort of solutions. Anyways generally an ERP system is flexible enough to integrate all of your business processes in a single enviroment without changing your business logic but in "Other" non-erp based systems you need to make protocols for obtaining the data of one business process and to use that data for other processes.

The big thing which provides ERP a clear edge on "other" non-ERP systems is its "Scalability". Their are no limits for your data extensions, no. of users and user groups, no. of controls which you can define in a system, unlimited options of defining the workflows etc. on a SINGLE platform. So you can say that it can work as a virtual image of your business/organisation and you can increase its resources when your business grows.

I can answer with concrete comparison if you define the word "others"

Thanks