Retreat chances vs. NPCs -- Tac not Man affects

I have just finished (in Orion) an extensive series of test runs of retreat chances against Euryale Swarmlings. In summary, the number of attacks that one makes prior to retreating makes no difference to the chances of a successful retreat. Maneuver makes no difference to the chances of a successful retreat. The only skill that affect retreat chances is Tactics.

Following are some summaries of tests:

A ) Offensive combat vs. defensive combat

1-round attack, immediate retreat, with Defensive Combat (total 100 tries):
0x fail = 69
1x fail = 21
2x fail = 7
3x fail = 1
4x fail = 1
5x fail = 1

1-round attack, immediate retreat, with Offensive Combat (total 107 tries):
0x fail = 71
1x fail = 16
2x fail = 10
3x fail = 1
4x fail =
5x fail =

Result: Offensive and defensive combat make no difference.

B ) Tactics vs. Maneuver

With high Man and high Tac,
1-round attack, immediate retreat, with Offensive Combat (total 107 tries):
0x fail = 71
1x fail = 16
2x fail = 10
3x fail = 1
4x fail =
5x fail =

Man traded in. With low Man and high Tac,
1x attack, then retreat (total 100 tries):
0x fail = 75
1x fail = 18
2x fail = 6
3x fail = 1

Tactics traded in at 65.26 - 55.26. With low Man and low Tac,
1x attack, then retreat (total 100 tries):
0x fail = 59
1x fail = 28
2x fail = 7
3x fail = 5
4x fail = 1

Result: Tactics makes a difference. Maneuver does not.

C ) 1-round attacks vs. 20-round attacks

Retreat against Euryale Swarmlings, spread out over the full range of Tactics advance. 1- and 20-round attacks were alternated to account for rising stats.

1-round attack, immediate retreat, with Offensive Combat (total 247 tries):
0x fail = 180
1x fail = 51
2x fail = 9
3x fail = 3
4x fail = 4

20-round attack, immediate retreat, with Offensive Combat (total 247 tries):
0x fail = 180
1x fail = 48
2x fail = 14
3x fail = 3
4x fail = 2

Result: The length of attack prior to retreat makes no difference.

D ) Agility boost test.

Immediate retreat against Euryale Swarmlings, spread out over the full range of Tactics advance. 20-round attacks using agility boost:
0x fail = 220
1x fail = 60
2x fail = 11
3x fail = 3
4x fail = 2
total = 296

Result: Agility boost makes no difference.

E ) Next test: Does waiting make a difference? Try waiting 1 minute before retreating, and after every unsuccessful retreat.

here it's w/o the details
remember only to take from it that Tac is crucial parameter for not get held (I guess it is the same mechanism as tractor beam, but not sure of it..I'll try to check it myself before war in Orion starts..).
DON'T take from it the CHANCES for hold, cause those tests were taken with really large-sized ship, and the larger size you have, the chances to get held are lower. (except the BBB we don't have ships with similar size..)