It means that the average throughput time of the as-is process is less than the throughput time of the to-be process, which is determined by the happy path. Now whether it is good or bad, depends entirely on the process, industry and maturity.

On a higher level, one might feel that a manufacturer should always strive for lower throughput time because it directly correlates to the fact that within a defined time frame a business is able to produce a higher quantity of a product or service and provide to the customer. Considering the example of a enthusiast android phone manufacturer in a highly competitive budget phone market, a lower throughput time might indicate higher products being manufactured which in turn leads to greater inventory supply for higher festive season sales leading to higher revenue. But if its a premium android phone manufacturer producing flagship units only for a premium section of the population a lower throughput time might indicate significant steps in the already mature production process (happy path) being skipped which in turn churn out substandard products leading to drop in production quality.

If happy-path = most used variant, then I'd guess you have a wild distribution, with a lot of variants with lower throughput. That could be interesting to study. Can be users are "cutting corners"

If happy-path = the documented process in bpmn that you loaded... probably the documented process is too cumbersome

Just my 0,02€

thank you Subhayu

thank you Guillermo