No you can't relate tokenization with securitization. Tokenization is much of like raising equity funds and providing token holders with token and providing them with a right to share of asset in that token. Securitization is when you pool liabilities & debt and transfer it to a whole new entity generally called the SPV or special purpose Vehicle and these SPV later issue contracts based on these debts.

So difference between both is that tokenization aims at distributing a right in the total assets while securitization is absolutely opposite and aims at pooling liabilities. You may say that they are opposite side of same coin due to a simple fact that they divide large pool of assets/debt in small contracts other than that I don't think there are any similarities.