which is better computer science and business systems or information technology
Hi, so it depends. Let me explain you the main difference between IT and Computer Science.
IT i.e., Information Technology is the practical implementation of software technologies. An IT professional works on the pre-built softwares. The have the sufficient knowledge about programming but they don't explicitly design programs aka softwares. They basically maintain the software that a software engineer builds. IT professionals are specialists in fields such as software development, desktop support, network security etc.
Whereas a computer science professional designes softwares. They actually write programs and built working softwares that are available in the market. A computer science engineer understands the complexity of computers. A computer science major can be expected of building a system like operating systems, android system etc.
So to sum up your question, Information Technology is the subset of Computer Science. If you are a software engineering professional so technically you already know everything about Information Technology.
So based on this computer science is better.
Hope this is helpful.