ChatGPT Matchup Summary (Win Condition and Game Plan)
Bowser Jr. is strongest when Mechakoopa, cannonball, and Clown Kart make you take a detour first, but before that setup layer is established Chrom usually wins the raw close-range button race.
The priority is not perfectly clearing every projectile. It is dash-shielding or short-hopping through the setup gap quickly enough that the body has to defend instead of rearming kart pressure.
The table shows that Rapid Jab Finisher, Down Smash, Up Smash, Neutral B, and Jab 2 all hand Chrom clean retaliation through OOS Uair, OOS Nair, Grab, and Up B, and those punishes matter most when they keep Bowser Jr. retreating.
Stocks are cleaner when you track the body after clown-car exposure or ledge drift instead of leaping far out at kart or up special, where Chrom risks more than he gains.
Full Move Frame Quick Reference
| Opponent Move | Startup | On Shield | Chrom OOS Candidate Moves | Barely Missed Moves |
|---|---|---|---|---|
| Jab 1 | 4 | -12 |
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| Jab 2 | 4 | -22 |
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| Rapid Jab | 4/7/10… | — | ||
| Rapid Jab Finisher | 6 | -32 |
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| Forward Tilt | 7 | -18/-16 |
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| Up Tilt | 7 | -19 |
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| Down Tilt | 4/12/23 | -11 |
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| Dash Attack | 8/11/14/17/20/25 | -17 |
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| Forward Smash | 18/21/24/27/30/35 | -12 |
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| Up Smash | 7/9/12/15/18/22 | -26 |
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| Down Smash | 12 | -32 |
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| Neutral Air | 7 | -6/-7/-7/-5/-6/-6 |
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| Forward Air | 10 | -11 |
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| Back Air | 12 | -9/-10 |
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| Up Air | 6 | -5 |
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| Down Air | 15… | -11 |
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| Neutral B | 37-97 | -23 to -17 |
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| Side B | 23 | — | ||
| Up B | 17/56 | — | ||
| Down B | — | — | ||
| Grab | 11 | — | ||
| Dash Grab | 14 | — | ||
| Pivot Grab | 15 | — |
Win Condition Checklist
- When Mechakoopa appears, decide immediately whether you are picking it up or jumping over it, but do not surrender stage just to reset the screen.
- After blocking Rapid Jab Finisher, Down Smash, Up Smash, Neutral B, or Jab 2, keep running after the punish so Bowser Jr. never gets the space to restart kart pressure.
- On blocked Neutral Air or Up Air, favor the next landing or jump read over a swing that starts too early.
- Once the clown car pops, watch the body’s fall path first and value the ledge funnel over extra center-stage damage.
Actions to Avoid
- Spending so much time on cannonball cleanup that you back yourself into the corner for free.
- Challenging Clown Kart head-on with a preemptive swing and letting the armor or timing shift win the trade.
- Flying offstage the instant the body appears and turning Chrom’s recovery into the actual risk.
- Freezing in shield because of Up Smash and allowing Bowser Jr. to rebuild the entire setup pattern.