Are you more successful growing sales revenue for inside sales or outside sales teams?
"Success" and "results" are defined differently by each stakeholder; therefore, it would be inappropriate to provide a global definition of these values on their behalf.
However, in order to keep it an apples to apples comparison of inside sales versus outside sales, we will limit the answer to address sales revenue increase only.
The short answer is that, all other things being equal, our sales consultant will achieve greater sales growth (percentage-wise...not necessarily revenue) with inside sales teams than with outside sales teams.
Why is this the case?
1. Physical environment
We can control the inside sales environment and change it on a minute to minute basis if necessary.
2. Emotional environment
The attitudes, emotions, and behaviors of an inside sales team can be consistenly maintained with solid onsite leadership.
We can connect with each inside sales rep several times per day. In outside sales, you might only see them once per week.
There is no limit to the number of coaching sessions that an inside sales rep can receive in a single day. Also, many more reps can be coached and developed in a day than with outside sales which is typically max'd out at two per day.
All of this being said, we do have great success in improving sales results for outside sales teams too. But in order to be fair, outside sales results should be compared between outside sales teams...not outside sales compared to inside sales. Both fulfill a client need...both play a role in the growth of a sales organization...but both are not equal.
When comparing only the sales results of outside sales teams in an apples to apples comparison, our sales increase and acceleration still is significantly more substantial than even the most aggressive growth sales teams or organizations in any given vertical or industry.
So to summarize:
Apples to apples: We rock both sides of the house
Apples to oranges: Inside sales will always have an edge over outside sales in sales growth and acceleration (caveat: all things being equal).