Is There a Difference Between Success and Achievement?

I got an email from somebody in India who read my article about being a slow thinker and he said I do software sales here in India my clients are asking me questions about the software I have to give them an answer right away what should I do? And I said no you don't have to given them an answers right away. Instead like if they say well how many clients can that handle and you go hmm you know what I will go find out for you I'll find out the real answer of exactly what it can handle. That would actually be impressive to a customer to see that you're you're taking their questions seriously and you're going to take the time to find the real answer