If the part being tested doesn't stack up to its opponents, that doesn't necessarily mean it's outclassed overall. It just means it probably isn’t as good when compared to its opponents in whatever specific thing I’m testing for. Sometimes though, more tests will need to be done in order to get more information to find out what exactly this part can be good at. These tests I’m doing are just the baseline information to tell me whether the part is better at something when being compared to another part or if it needs to be tested in other areas to find out what it can be good at.

I used Sting Liner-S (Battle Ring Mode) when Air Knight K4 faced Caynox C3, Garuda G3, Kerbeus K4, and (Right Spin) Spryzen Requiem S3 and 00Bump Atomic when Air Knight K4 faced Balkesh B3, Fafnir F3, and (Left Spin) Spryzen Requiem S3. Discs and Drivers were switched halfway through the tests.

Air Knight K4 Sting Liner-S (Battle Ring Mode) (Odd) vs. Caynox C3 Sting Liner-S (Battle Ring Mode) (Even) (Switch Discs And Drivers After 10 Battles)
- AK4.St.L-S: 2 OS (10% Win Rate)
- C3.St.L-S: 18 OS (90% Win Rate)

Battles 1-10: AK4 had St (Blue) and L-S (1), C3 had St (Red) and L-S (2)
Battles 11-20: AK4 had St (Red) and L-S (2), C3 had St (Blue) and L-S (1)

Air Knight K4 Sting Liner-S (Battle Ring Mode) (Odd) vs. Garuda G3 Sting Liner-S (Battle Ring Mode) (Even) (Switch Discs And Drivers After 10 Battles)
- AK4.St.L-S: 0 Wins (0% Win Rate)
- G3.St.L-S: 20 OS (100% Win Rate)

Battles 1-10: AK4 had St (Blue) and L-S (1), G3 had St (Red) and L-S (2)
Battles 11-20: AK4 had St (Red) and L-S (2), G3 had St (Blue) and L-S (1)

Air Knight K4 Sting Liner-S (Battle Ring Mode) (Odd) vs. Kerbeus K4 Sting Liner-S (Battle Ring Mode) (Even) (Switch Discs And Drivers After 10 Battles)
- AK4.St.L-S: 4 OS (20% Win Rate)
- K4.St.L-S: 16 OS (80% Win Rate)

Battles 1-10: AK4 had St (Blue) and L-S (1), K4 had St (Red) and L-S (2)
Battles 11-20: AK4 had St (Red) and L-S (2), K4 had St (Blue) and L-S (1)

Air Knight K4 Sting Liner-S (Battle Ring Mode) (Odd) vs. (Right Spin) Spryzen Requiem S3 Sting Liner-S (Battle Ring Mode) (Even) (Switch Discs And Drivers After 10 Battles)
- AK4.St.L-S: 4 OS (20% Win Rate)
- SRS3.St.L-S: 16 OS (80% Win Rate)

Battles 1-10: AK4 had St (Blue) and L-S (1), SRS3 had St (Red) and L-S (2)
Battles 11-20: AK4 had St (Red) and L-S (2), SRS3 had St (Blue) and L-S (1)

Air Knight K4 00Bump Atomic (Odd Weak) vs. Balkesh B3 00Bump Atomic (Even Weak) (Switch Discs And Drivers After 10 Battles)
- AK4.00B.At: 8 OS (40% Win Rate)
- B3.00B.At: 12 OS (60% Win Rate)

Battles 1-10: AK4 had 00B (1) and At (1), B3 had 00B (2) and At (2)
Battles 11-20: AK4 had 00B (2) and At (2), B3 had 00B (1) and At (1)

Air Knight K4 00Bump Atomic (Odd Weak) vs. Fafnir F3 00Bump Atomic (Even Weak) (Switch Discs And Drivers After 10 Battles)
- AK4.00B.At: 11 OS (55% Win Rate)
- F3.00B.At: 9 OS (45% Win Rate)

Battles 1-10: AK4 had 00B (1) and At (1), F3 had 00B (2) and At (2)
Battles 11-20: AK4 had 00B (2) and At (2), F3 had 00B (1) and At (1)

Air Knight K4 00Bump Atomic (Odd Weak) vs. (Left Spin) Spryzen Requiem S3 00Bump Atomic (Even Weak) (Switch Discs And Drivers After 10 Battles)
- AK4.00B.At: 10 OS (50% Win Rate)
- SRS3.00B.At: 10 OS (50% Win Rate)

Battles 1-10: AK4 had 00B (1) and At (1), SRS3 had 00B (2) and At (2)
Battles 11-20: AK4 had 00B (2) and At (2), SRS3 had 00B (1) and At (1)

While it didn't do well in Same Spin, Air Knight K4 did pretty decent in Opposite Spin. Air Knight K4 also doesn't seem to have the best Burst Resistance, so keep that in mind as well.