You may have difficulties with the choice of a CPU, you will solve them by looking at full benchmark Intel Core i9-9900T Cinebench r23 score single and multi core and decide is it a good processor or a bad one to buy, how powerful is this processor. Here is useful information from Cinebench r23 benchmark. A step-by-step analysis of all the specifications, to make it easier to understand, is made by the table. After looking at the data of all test and video, you already be able to understand do you need to buy Intel Core i9-9900T or not.
All the number that you have looked at here do not mean that you should be guided entirely by them and trust a simple comparison of these figures. Better to watch the video tests and read the reviews of real owners of Intel Core i9-9900T before making a decision buy this processor or not.